Initial VIPR
3.5830
Registry seed
Current VIPR
3.6095
After latest rated game
Net Movement
+0.0265
Current minus initial
Record
6-2
75% win rate · 8 rated games
Storyline
Barb O'Connor entered VIPR with an initial registry rating of 3.5830. Across 8 rated doubles games, the player went 6-2 and moved +0.0265, finishing at 3.6095.
Why It Moved
AI-generated explanation: The 6-2 record produced +0.0478 from wins and -0.0213 from losses, for a net move of +0.0265. The biggest single-game impact was -0.0160 against Ken Vallance as partner and Cookie Sciacca / David Koleda as opponents. In game #8 on 2026-10-20, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.7179 vs opponent team 3.4793.
Partner Chemistry
Partnership patterns are starting to emerge.
Barb's most common partner signals so far: Chris Eversole (2-0, 100%), Nancy OBrien (2-0, 100%), Debbie Hellman (1-1, 50%), Stephen Bussey (1-0, 100%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Streaks & Rivalries
Rivalry
Barb has faced Cookie Sciacca 4 times - record: 3-1. Clear ownership of the matchup.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-13 | 3-1 | 3.5830 | 3.6143 | +0.0313 |
| 2026-10-20 | 3-1 | 3.6143 | 3.6095 | -0.0048 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Win | 21-20 | Stephen Bussey | Erin DeFrates / Gene Konzen | 3.5830 | +0.0130 | 3.5960 |
| 2 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Loss | 12-21 | Debbie Hellman | Erin DeFrates / Alejandra Bussey | 3.5960 | -0.0053 | 3.5907 |
| 3 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Win | 21-15 | Chris Eversole | Erin DeFrates / Tom Hertz | 3.5907 | +0.0116 | 3.6023 |
| 4 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Win | 21-17 | Nancy OBrien | Sue Dahl / Erin DeFrates | 3.6023 | +0.0120 | 3.6143 |
| 5 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Win | 21-15 | Nancy OBrien | Ellen Huber / Cookie Sciacca | 3.6143 | +0.0017 | 3.6160 |
| 6 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Win | 21-17 | Debbie Hellman | Cookie Sciacca / Kirstin Burri | 3.6160 | +0.0072 | 3.6232 |
| 7 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Win | 21-10 | Chris Eversole | Cookie Sciacca / Bob Humphrey | 3.6232 | +0.0023 | 3.6255 |
| 8 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 15-21 | Ken Vallance | Cookie Sciacca / David Koleda | 3.6255 | -0.0160 | 3.6095 |
Formula Homework
These rows show the team ratings used in the adjustment calculation. The computed delta is the signed rating change produced by the current v0.6 formula.
| # | Player Team ( AVG ) | Opponent Team ( AVG ) | Winner-Loser VIPR Diff | Computed Delta |
|---|---|---|---|---|
| 1 | 3.7078 | 3.8159 | -0.1081 | +0.0130 |
| 2 | 3.3973 | 3.5751 | +0.1778 | -0.0053 |
| 3 | 3.8425 | 3.8998 | -0.0574 | +0.0116 |
| 4 | 3.7026 | 3.7713 | -0.0687 | +0.0120 |
| 5 | 3.7146 | 3.2998 | +0.4148 | +0.0017 |
| 6 | 3.3881 | 3.2900 | +0.0981 | +0.0072 |
| 7 | 3.8789 | 3.5224 | +0.3566 | +0.0023 |
| 8 | 3.7179 | 3.4793 | -0.2386 | -0.0160 |
Rating movement formula
Team VIPR = average - (average - lower partner) * CRF, with CRF = 0.40.
Adjustment = 0.02 / (1 + 10 ^ (2.5 * (winner team VIPR - loser team VIPR))).
Winning partners both receive +adjustment. Losing partners both receive -adjustment.
Score margin is recorded for context but is not currently part of the v0.6 formula.
First game check: winner-loser VIPR diff -0.1081 -> computed delta +0.0130; 3.5830 +0.0130 = 3.5960